Blank for forming a container



FIG. 1 is a front view incorporating the new design (the back view is a mirror image of the front view and is not shown);

FIG. 2 is a top view incorporating the new design (the bottom view is a mirror image of the top view and is not shown);

FIG. 3 is a right side view incorporating the new design (the left side view is a mirror image of the right side view and is not shown); and,

FIG. 4 is a top isometric view incorporating the new design. 

CLAIM The ornamental design for a blank for forming a container, as shown and described. 